lately I received the supposed diagnosis Small Fiber Neuropathe (and I habe Mononeuropathie of my arms - long fibers). Does SFN cause twitching? In my case it reacts on cortisone by the way, indicating it is autoimmune.Thanks!

Yes I am fairly certain it can cause fasciculations due to the nerve damage. Cramps can also be present. I remember thinking I had this years ago, but never bothered to get a biopsy, and my neuro told me that neuropathies could cause the symptoms I was experiencing. Best of luck